Vinit Stainless, a prominent supplier of stainless steel solutions with headquarters in Chennai, India, is well known for producing and distributing premium stainless steel 309H pipes. These pipes are perfect for industrial operations that require durability and resistance to heat and corrosion because they are made for high-temperature and high-pressure environments. By using sophisticated production methods and closely adhering to international standards, Vinit Stainless guarantees that each SS 309H pipe will have exceptional mechanical strength and durability. Our pipes provide dependable performance in the most demanding applications, making us a trusted partner for important projects. They are widely used in thermal processing units, petrochemical industries, and power plants.
Chromium (22–24%) and nickel (12–15%) make up stainless steel 309H pipes, while a higher carbon content (0.04–0.10%) enhances creep resistance and high-temperature strength. These pipes have an approximate elongation of 40%, a yield strength of 205 MPa, and a tensile strength of 515 MPa. At temperatures as high as 1000°C, the austenitic structure offers exceptional toughness, thermal stability, and oxidation resistance. SS 309H pipes are perfect for use in heat-intensive industrial applications because they are specifically made to maintain structural integrity in environments with high temperatures.
| Thickness | 0.5mm-100mm | ||||||
| Outer diameter | 10mm, 25.4mm, 38.1mm, 50.8mm, 100mm, 250mm, 300mm, 350mm, etc | ||||||
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc | ||||||
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc | ||||||
| Finish | Hot rolled (HR), Cold rolled Tube (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) | ||||||
| Form | Round tube Square tube Rectangular tube etc. | ||||||
Grade | Ni | Mn | P | C | S | Si | Cr | Mo | N | |
309H | min. | 8.0 | – | – | – | – | – | 18.0 | – | – |
max. | 10.5 | 2.0 | 0.045 | 0.08 | 0.030 | 0.75 | 20.0 | |||
Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
309H | 515 | 40 | 205 | 92 | 201 |
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Stainless 309H Square Pipes are square-shaped pipes made from 309H stainless steel, offering high-temperature resistance, durability, and corrosion resistance, ideal for structural and high-heat applications.
SS 309H Seamless Pipes are pipes made from 309H stainless steel without welded seams, providing superior strength, high-temperature resistance, and excellent durability for demanding industrial and high-heat applications.
Stainless Steel 309H ERW Pipes are electric resistance welded pipes made from 309H stainless steel, known for high-temperature resistance and durability, used in various industrial and heat-intensive applications.
SS 309H LSAW Pipes are longitudinally submerged arc welded pipes made from 309H stainless steel, offering high heat resistance and strength, suitable for high-pressure and high-temperature industrial applications.
Stainless Steel 309H Round Pipes are cylindrical pipes made from 309H stainless steel, providing excellent heat resistance, durability, and corrosion resistance, ideal for high-temperature and industrial applications.
Stainless Steel 309H Welded Pipes are made from 309H stainless steel, joined by welding. They offer high-temperature resistance, durability, and strength, suitable for various industrial and high-heat applications.
Applications requiring outstanding performance in hot and corrosive environments frequently use stainless steel 309H pipes. These consist of petrochemical equipment, boiler tubes, furnace parts, and heat exchangers. Because 309H pipes are resistant to oxidation, scaling, and thermal cycling, they are used in a variety of industries, including chemical processing, metallurgy, power generation, and oil and gas. They are appropriate for structural supports and pressure systems in industrial furnaces and thermal reactors because of their high carbon content, which increases strength under extended exposure to high heat. For welded components in demanding high-temperature service environments, SS 309H pipes are also preferred.
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